Mayor Ken Livingstone said: 'Oyster is already making travel in London quicker and easier, by speeding up the bus service, cutting queues at Tube stations and helping to take cash off the buses. Now the smart-card technology can make Londoners' lives even easier. Oyster users will be able to pay for their car parking or for a pint of milk in the local shop with their Oyster card, instead of using cash.'